Bag Filter is used for removal of dust from air. Motive Powers Inc. Supplies Bag Filter for Removal of Dust from Air. Motive Powers Inc. Manufactures Multi Tower Scrubber, Centrifugal Fans & Blowers, Fume Extraction Systems, Hoods, Fabricated Fans, Cast Fans, Cyclones, Rotary Dryers, Dynamic Scrubber, Catalytic Scrubber, etc. The bag filter restricts air flow by using a suitable filter cloth. Filter cloth should be such that it offers minimum resistance to air flow but holds the dust particles to travel with air. A suitable bag filter can be used as per the dust quality.